Effects of transgenic Bt rice on non-target pests following pesticide applications plays an important role in evaluating the ecological safety of transgenic rice. Changes of the life history parameters of laboratory p...Effects of transgenic Bt rice on non-target pests following pesticide applications plays an important role in evaluating the ecological safety of transgenic rice. Changes of the life history parameters of laboratory population of Nilaparvata lugens feeding on transgenic Bt rice T2A-1 and its parental line cv. MH63 as the control, and the contents of oxalic acid and soluble sugar following three pesticides （triazophos, jinggangmycin and chlorantraniliprole） treatments were investigated in this paper. Results showed that the population parameters of N. lugens and the physiological and biochemical parameters of rice did not differ significantly between T2A-1 and MH63 without pesticide application. But, the emergence rate （ER）, the nymphal number of next generation （NN）, and the index of population trend （IP） on T2A-1 treated with 10 mg L^-1 of triazophos were significantly higher than those on MH63, respectively, while the hatchability （HB） on T2A-1 treated with the three pesticides were obviously lower than those on MH 63. Furthermore, the content of oxalic acid in MH63 treated with 20 mg L-1 triazophos and, 40 and 80 mg L-1 chlorantraniliprole was significantly higher than that in T2A-1, while the content of soluble sugar in T2A-1 treated with 400 mg L-1 jinggangmycin was significantly higher than that in MH63. The results above indicated that triazophos in a low dose could cause a more favor of T2A-1 to population growth of N. lugens compared with MH 63.展开更多
By taking into account the two-spin interaction in the transverse Ising model(TIM),the influence of the defect layers(including J_B andΩ_B) on the polarization and Curie temperature are calculated numerically,within ...By taking into account the two-spin interaction in the transverse Ising model(TIM),the influence of the defect layers(including J_B andΩ_B) on the polarization and Curie temperature are calculated numerically,within the framework of the decoupling approximation under Green's function.The numerical results show that the polarization and Curie temperature will both become large sensitively due to the large values of J_B and the small value ofΩ_B of the defect layers.Meanwhile,the dependence of the crossover values of the exchange interaction J a,the transverse GeldΩ_A of the bulk material on the exchange interaction J_B and the transverse fieldΩ_B of the defect layers are shown in 3-Dimensional(3-D) figures for the first time.Moreover,the transition features of the ferroelectric thin film with defect layers are presented.展开更多
基金funded by the National Science and Technology Major Project of the Ministry of Science and Technology of China (2009ZX08011-009B)the Scientific Innovation Research of College Graduate in Jiangsu Province, China (CXZZ11-0986)
文摘Effects of transgenic Bt rice on non-target pests following pesticide applications plays an important role in evaluating the ecological safety of transgenic rice. Changes of the life history parameters of laboratory population of Nilaparvata lugens feeding on transgenic Bt rice T2A-1 and its parental line cv. MH63 as the control, and the contents of oxalic acid and soluble sugar following three pesticides （triazophos, jinggangmycin and chlorantraniliprole） treatments were investigated in this paper. Results showed that the population parameters of N. lugens and the physiological and biochemical parameters of rice did not differ significantly between T2A-1 and MH63 without pesticide application. But, the emergence rate （ER）, the nymphal number of next generation （NN）, and the index of population trend （IP） on T2A-1 treated with 10 mg L^-1 of triazophos were significantly higher than those on MH63, respectively, while the hatchability （HB） on T2A-1 treated with the three pesticides were obviously lower than those on MH 63. Furthermore, the content of oxalic acid in MH63 treated with 20 mg L-1 triazophos and, 40 and 80 mg L-1 chlorantraniliprole was significantly higher than that in T2A-1, while the content of soluble sugar in T2A-1 treated with 400 mg L-1 jinggangmycin was significantly higher than that in MH63. The results above indicated that triazophos in a low dose could cause a more favor of T2A-1 to population growth of N. lugens compared with MH 63.
文摘By taking into account the two-spin interaction in the transverse Ising model(TIM),the influence of the defect layers(including J_B andΩ_B) on the polarization and Curie temperature are calculated numerically,within the framework of the decoupling approximation under Green's function.The numerical results show that the polarization and Curie temperature will both become large sensitively due to the large values of J_B and the small value ofΩ_B of the defect layers.Meanwhile,the dependence of the crossover values of the exchange interaction J a,the transverse GeldΩ_A of the bulk material on the exchange interaction J_B and the transverse fieldΩ_B of the defect layers are shown in 3-Dimensional(3-D) figures for the first time.Moreover,the transition features of the ferroelectric thin film with defect layers are presented.
